Banco S3
Number 49 of 50 banks in Mexico by loans, data to Aug 2026. Every figure is as filed with the Comisión Nacional Bancaria y de Valores, and each traces to a document and its SHA-256 fingerprint.
Deposit insurance here: up to about US$207,126 per depositor and per bank, on the conditions set out below. Above that, a deposit rests on the bank and its owner.
Who owns it, and what changed.
- No owner group on file. The Register names an owner only where a document shows it.
Banco S3's loan book, Sep 2023 to Aug 2026.
| Date | Million pesos |
|---|---|
| Aug 2026 | 0.0 |
| Jun 2026 | 14.1 |
| Mar 2026 | 258.0 |
| Dec 2025 | 10.1 |
| Sep 2025 | 48.5 |
| Jun 2025 | 187.9 |
| Mar 2025 | 113.1 |
| Dec 2024 | 34.0 |
| Sep 2024 | 105.1 |
| Jun 2024 | 20.6 |
| Mar 2024 | 27.5 |
| Dec 2023 | 41.3 |
| Sep 2023 | 61.8 |
Gross loans: cartera de crédito con riesgo de crédito (stages 1, 2 and 3, plus loans at fair value), each bank on its own, not consolidated with its SOFOM. Quarter-ends and the latest month, in local currency as filed. Dollar figures above: CNBV, pesos; converted at the Banxico FIX of the last business day of each month. Twelve-month changes are in pesos (the CNBV publishes no currency split).
What stands behind a deposit here.
- 400,000 UDIs per person and per bank, principal and interest, whatever the number of accounts: about MX$3.52 million, or US$207,126, at 31 August 2026 values (IPAB; Ley de Protección al Ahorro Bancario, art. 11).
Ley de Protección al Ahorro Bancario (texto vigente, última reforma DOF 11-05-2022), art. 11 · Cámara de Diputados · sha256 40725278819b
Valor de las UDIS (SIE serie SP68257) · Banco de México · sha256 f04e33e2ef63 - Serie Histórica de Banca Múltiple: datos en CSV (sh_datos_40.csv) · Comisión Nacional Bancaria y de Valores · sha256 3bab5519fe2e
- Tipo de cambio FIX, pesos por dólar (SIE serie SF43718) · Banco de México · sha256 d34a560d73a0
- All 4 source files for Mexico, each with its fingerprint
- Cite as: Acta, The Register, Banco S3, data to Aug 2026. https://www.actaregistro.com/register/mexico/banco-s3
If something here is wrong, tell us.
Figures are printed as filed with the CNBV. If you speak for Banco S3 and believe a figure or an ownership line is wrong, write to us and to the supervisor; corrections are made in public.